Archa Seven

Archa Seven is a largely organic planet, dusty and rocky on the surface, with crystalline webs overhanging its large cliffs, and small mushroom-like plants in its canyons. It is the seventh planet in the Archa System. It has a large network of tunnels, which are home to a race of spiders, it is also home to all the other spider transformers as well they were in the ship that crashed and the survivors got turned into spider transformers also, they were just never shown in the episode The planet apparently has three moons.

Fiction

Transformers Animated cartoon

Optimus, Elita-1, and Sentinel landed on Archa Seven on rumors of the Decepticon ship crashing there. Optimus objected as he said there were reasons organic planets were off-limits to Autobots, but Sentinel twisted his arm by emphasizing that the Decepticons were chronic hoarders of energon, and that if they found the ship they were bound to be set for life. Along Came a Spider